Originally Posted by WillCAD

This is one of the few - VERY few - areas where I completely agree with the old "abundance of caution" BS.

It's a hand grenade. Sure, it may have been inert, a replica, or a dummy practice grenade, but the average rank-and-file TSO is completely unqualified to make that determination. And I for one don't want front line TSOs shaking or fiddling with hand grenades in an attempt to determine whether they're live. How's the average TSO supposed to figure it out? Pull the pin and drop the spoon, and it there is no loud noise, it's safe? Unscrew the core, and if it's empty inside, it's safe?